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Fixes to SMB file handling and logging.

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There were some cases where the log would be missing a field
or data wouldn't get sent to file analysis.  At least some of
this is fixed now and I get confused a bit less when I look
at the logs now.

Also, I made the default handling "FILE" so that things like
FILE_UNKNOWN wouldn't show up in the logs so regularly.  It's
technically correct that way, but it doesn't look good and it's
correct as FILE often enough that it make sense to make it the
default I think.
This commit is contained in:
Seth Hall 2016-04-01 09:43:13 -04:00
parent 5721db4be7
commit e2dfaf8a5b
8 changed files with 82 additions and 76 deletions
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11
scripts/base/protocols/smb/main.bro
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@ -16,7 +16,8 @@ export {
FILE_WRITE,
FILE_OPEN,
FILE_CLOSE,
FILE_UNKNOWN,
FILE_DELETE,
FILE_RENAME,
PIPE_READ,
PIPE_WRITE,
@ -91,7 +92,8 @@ export {
service : string &log &optional;
## File system of the tree.
native_file_system : string &log &optional;
## If this is SMB2, a share type will be included.
## If this is SMB2, a share type will be included. For SMB1,
## the type of share will be deduced and included as well.
share_type : string &log &default="UNKNOWN";
};
@ -137,7 +139,7 @@ export {
tree_service : string &log &optional;
## If the command referenced a file, store it here.
referenced_file : FileInfo &optional;
referenced_file : FileInfo &log &optional;
## If the command referenced a tree, store it here.
referenced_tree : TreeInfo &optional;
};
@ -226,7 +228,8 @@ function set_current_file(smb_state: State, file_id: count)
smb_state$fid_map[file_id]$fid = file_id;
}
smb_state$current_file = smb_state$fid_map[file_id];
smb_state$current_cmd$referenced_file = smb_state$fid_map[file_id];
smb_state$current_file = smb_state$current_cmd$referenced_file;
}
function write_file_log(state: State)